SolaSmart™ Plus Installation Guide
Version 1.1 – Mar 2012 Page 7
MOUNTING THE SENSORS AND CONNECTING WIRING
Introduction
The locations and way that the sensors are mounted is critical to ensure the
SolaSmart™:
Operates correctly and at greatest efficiency;
Protects the system against damage from extreme temperatures, and
If the Tank (Upper Tank) and/or Inlet (Lower Tank) sensors are not mounted
correctly:
There may be an inaccurate Topout sensing, which could lead to damage to
the hot water cylinder or other components.
There may be an inaccurate BioSafe sensing, which could increase the risk
of biological contamination.
If the ROOF sensor is not correctly mounted:
The unit may not be able to detect FROST settings (this can lead to the
collector panel bursting).
Please follow the instructions below carefully.
Positioning
the ROOF
Sensor
The ROOF sensor should be fitted into a metal immersion ‘pocket’ in the hot
water outlet pipe.
Apply plenty of heat transfer compound (available from your distributor)
between the sensor and the lining of the hot water outlet pipe.
Seal the sensor with neutral cure sealant and install external lagging. The
cable should also be insulated from the bare pipe.
Ensure that the sensor cable is NOT in contact with the solar collector or any
other exposed metallic surface on the roof.
Secure the ROOF sensor cable so it cannot move in strong winds. This is
important to stop wire fatigue breakages.
To prevent physical damage to the cable by birds and vermin it is
recommended that the cable is run in appropriate electrical conduit that will
prevent damage to the sensor cable. The conduit needs to be run from the
collector to the controller such that all cable is protected. Make sure the
conduit is not in contact with the collector such that heat damage could occur
to the conduit.
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